生物技术通报 ›› 2023, Vol. 39 ›› Issue (11): 283-296.doi: 10.13560/j.cnki.biotech.bull.1985.2023-0531

• 研究报告 • 上一篇    下一篇

单叶蔷薇NAC基因家族鉴定及干旱胁迫响应分析

冯策婷(), 江律, 刘鑫颖, 罗乐, 潘会堂, 张启翔, 于超()   

  1. 北京林业大学园林学院 花卉种质创新与分子育种北京市重点实验室 国家花卉工程技术研究中心 城乡生态环境北京实验室 园林环境教育部工程研究中心 林木花卉遗传育种教育部重点实验室,北京 100083
  • 收稿日期:2023-06-05 出版日期:2023-11-26 发布日期:2023-12-20
  • 通讯作者: 于超,男,博士,教授,研究方向:观赏植物种质资源与遗传育种;E-mail: yuchao@bjfu.edu.cn
  • 作者简介:冯策婷,女,硕士研究生,研究方向:花卉种质资源与遗传育种;E-mail: fengceting@qq.com
  • 基金资助:
    乡人居生态环境学(北京高校高精尖学科建设项目)

Identification of the NAC Gene Family in Rosa persica and Response Analysis Under Drought Stress

FENG Ce-ting(), JIANG Lyu, LIU Xing-ying, LUO Le, PAN Hui-tang, ZHANG Qi-xiang, YU Chao()   

  1. School of Landscape Architecture,Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding,National Engineering Research Center for Floriculture,Beijing Laboratory of Urban and Rural Ecological Environment,Engineering Research Center of Landscape Environment of Ministry of Education,Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education,Beijing Forestry University,Beijing 100083
  • Received:2023-06-05 Published:2023-11-26 Online:2023-12-20

摘要:

NAC转录因子在植物胁迫应答中起关键作用,单叶蔷薇(Rosa persica)主要分布于我国新疆,研究其耐旱能力对治理荒漠地区生态问题具有重要意义。对单叶蔷薇NAC基因家族进行全基因组鉴定,分析基因家族特征和表达模式,利用RT-qPCR验证NAC基因在干旱胁迫下的表达情况。NAC基因家族的基因特征变化较大,而基因结构和基序相对保守。启动子分析表明RbeNAC在调节激素合成和适应环境胁迫方面具有重要作用。基于转录组数据分析发现RbeNAC基因的表达表现出组织特异性和对干旱胁迫的响应。实时荧光定量PCR(RT-qPCR)结果表明,7个基因(RbeATAFRbeSOG1RbeNAC17RbeNAC71RbeNAC72RbeNAC90RbeNAC96)在根和叶中积极响应干旱胁迫。本研究鉴定了单叶蔷薇NAC基因,初步探究了不同基因可能发挥的功能,获得了7个响应干旱胁迫的候选基因,为后续开展单叶蔷薇抗逆性育种提供参考依据。

关键词: 单叶蔷薇, NAC转录因子, 干旱胁迫, 基因表达

Abstract:

NAC transcription factors play a crucial role in plant stress response, and the study of the drought tolerance of Rosa persica, which is mainly distributed in Xinjiang Uygur Autonomous Region, China, is of great importance for the management of ecological problems in desert areas. Genome-wide identification of the NAC gene family in R. persica was performed, the gene family characteristics and expression patterns were analyzed, and the NAC gene expression under drought stress was validated using real time quantitative PCR(RT-qPCR). The NAC gene family had a highly variable gene profile, while the gene structure and motifs were relatively conserved. Promoter analysis indicated that RbeNAC had an important role in the regulation of hormone synthesis and adaptation to environmental stresses. Analysis of transcriptome-based data revealed that RbeNAC gene expression demonstrated tissue specificity and response to drought stress. RT-qPCR results indicated that seven genes(RbeATAF, RbeSOG1, RbeNAC17, RbeNAC71, RbeNAC72, RbeNAC90 and RbeNAC96)in the roots and leaves, responded positively to drought stress. In this study, the NAC genes of R. persica were identified, the feasible functions of different genes were explored, and seven genes that respond positively to drought stress were found, which may provide a reference for breeding for stress resistance in R. persica.

Key words: Rosa persica, NAC transcription factors, drought stress, gene expression